// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// This file is used for debugging assertion support.  The Lock class
// is functionally a wrapper around the LockImpl class, so the only
// real intelligence in the class is in the debugging logic.

#include "base/synchronization/lock.h"

#if DCHECK_IS_ON()

namespace base {

Lock::Lock()
    : lock_()
{
}

Lock::~Lock()
{
    DCHECK(owning_thread_ref_.is_null());
}

void Lock::AssertAcquired() const
{
    DCHECK(owning_thread_ref_ == PlatformThread::CurrentRef());
}

void Lock::CheckHeldAndUnmark()
{
    DCHECK(owning_thread_ref_ == PlatformThread::CurrentRef());
    owning_thread_ref_ = PlatformThreadRef();
}

void Lock::CheckUnheldAndMark()
{
    DCHECK(owning_thread_ref_.is_null());
    owning_thread_ref_ = PlatformThread::CurrentRef();
}

} // namespace base

#endif // DCHECK_IS_ON()
